There's no problem with the bulb, the projector, after working perfectly for over a year, has simply stopped responding, no fan, no anything only the little led light shining a constant red and blue at the same time. Any solutions to this problem?
SOURCE: Problem with Power up on PTD3500
Position reference device has probably fallen off the filter wheel, replace the filter wheel.
SOURCE: color problems
i don't know if this will work but..... I have an Optoma h27 and we were having problems with the color and ours is mounted on the ceiling in inverted also; and after two years we started having color problems, come to find out that on the menu there is a option for high altitude and that had been turned to the "off" position (probably by our kids resetting all the options and not turning this one back on)..... after taking it to a tech that cleaned it for $97.00 and said there was no problems he could find, we played around with the remote/menu and came across this high altitude option and when we saw it was on the "off" position, we put it to the "on" position and another fan inside the projector came on and that helps to keep the inside of the projector cool at all time and helps from the color becoming weird..... Try this on yours and hopefully that will solve your problem.
SOURCE: Optoma EP755 new lamp when power standby button
you need to reset the lamp timer, usually done by holding some buttons while turning on
SOURCE: My Optoma projector has the red light come on for
if it is a replacement lamp, was the lamp timer reset after replacement? if it's the original lamp and the projector only has 83 hours on it, there is either a bad lamp or a cooling problem.
SOURCE: I replaced the lamp when and the red LED light
More likely a faulty ballast. Check connections.
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